HQ are flow throttling valves, not compensated, and with check valve to allow free flow in the opposite direction.
The flow adjustement is done by turning the setting screw in the normal model. Optional versions with a graduate micrometer knob are available on request. Clockwise rotation increases the throttling (passage reduced).
Valve size and max flow:
Mounting surface:
Vicolo del lavoro, 9 40069 Zola Predosa (BO) Italy
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